code: def test_int_not_normalized(self):
      state = running_statistics.init_state(specs.Array((), jnp.int32))
  
      x = jnp.arange(5, dtype=jnp.int32)
  
      state = update_and_validate(state, x)
      normalized = running_statistics.normalize(x, state)
  
      np.testing.assert_array_equal(normalized, x)
  
imports: import functools
  import math
  from typing import NamedTuple
  from acme import specs
  from acme.jax import running_statistics
  import jax
  from jax import config
  import jax.numpy
  import numpy
  import tree
  from absl.testing import absltest
label_desc: Use image node_id 9 for calling the RunningStatisticsTest obj's underlying member method code with example usage: obj.test_int_not_normalized() without return types